PKR vice-president Rafizi Ramli is set to release documents protected under the Official Secrets Act (OSA) on Monday, which is likely to put him on a collision course with the authorities, courting a possible seven-year jail term.

Rafizi said the classified documents can back up his claim that 1MDB is the reason why thousands of army veterans aren't getting their gratuity payments.

The Pandan MP has, for several days now, been threatening to release the documents to force the Lembaga Tabung Angkatan Tentera (LTAT) to come clean on the matter, but to no avail.

"If that (releasing OSA documents) is what it takes to get them to pay these people's gratuity payments, (then) it's worth it. There are thousands of families affected. These are poor people and they suffer in silence.

"I have no choice; how else can I do it?" said the father of a two-year-old son.

Rafizi said he had heard much of the plight of families of army veterans which have yet to receive their gratuity payments.

"I can't stand hearing the stories and people coming up to see me. I just want them (LTAT) to pay their gratuity payments," he said.

He said the government has a few days to sort out the matter before he makes the revelation on Monday.

Rafizi said he is unfazed by the prospect of possibly two years behind bars under the OSA.

"Why succumb to laws that are enacted to stifle the people in the first place?" he asked.

Rafizi had claimed that 1MDB diverted RM288 million it received from the government, meant for LTAT's subsidiary Perbadanan Perwira Harta Malaysia (PPHM), to pay off its own debt interest instead.

He claimed that up until September 2015, 1MDB still owed RM396.41 million to PPHM, thus causing LTAT to have insufficient funds to pay out gratuity to army veterans.

PPHM was given the turnkey contract for 1MDB's upgrading works at eight air bases, in exchange for the sovereign fund being granted the Sungai Besi land bank to develop Bandar Malaysia.